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Subject[PATCH] UML fixes
Please pull

This fixes some UML bugs, including
some signal blocking bugs
a 'tracing myself' bug
a uaccess fencepost bug
call schedule_tail correctly
block signals correctly in the timer handler

Also, there were a number of code cleanups, particularly in the ubd driver.
That driver now locks the host files that it uses to prevent multiple UMLs
from booting on the same filesystem.

stdout is now flushed before entering the kernel to ensure that early messages
appear before printk output.


arch/um/drivers/line.c | 6
arch/um/drivers/ubd_kern.c | 227 +++++++++++++++++++---------------
arch/um/drivers/ubd_user.c | 44 ++++--
arch/um/include/os.h | 2
arch/um/kernel/mem.c | 2
arch/um/kernel/process.c | 3
arch/um/kernel/skas/include/uaccess.h | 2
arch/um/kernel/skas/process_kern.c | 10 -
arch/um/kernel/time_kern.c | 2
arch/um/kernel/tt/process_kern.c | 26 +--
arch/um/kernel/um_arch.c | 1
arch/um/os-Linux/file.c | 31 ++++
include/asm-um/ | 12 +
13 files changed, 230 insertions(+), 138 deletions(-)

ChangeSet@1.1022.1.2, 2003-02-25 00:44:11-05:00,
Fixed the calls to schedule_tail to not be conditional on CONFIG_SMP,
to be conditional on current->thread.prev_sched being non-NULL,
and to pass current->thread.prev_sched in to schedule_tail.

ChangeSet@1.914.185.4, 2003-02-24 21:59:25-05:00,
Fixed a bug with the initialization of the mode that a device file
is opened with.

ChangeSet@1.914.185.3, 2003-02-24 01:48:30-05:00,
Fixed a deadlock caused by not disabling interrupts around a call
to update_process_times.

ChangeSet@1.914.185.2, 2003-02-23 14:50:33-05:00,
Made some minor fixes to get rid of some unneeded code, improve
a panic message, and fix a signal blocking bug.

ChangeSet@1.914.185.1, 2003-02-19 11:05:33-05:00,

ChangeSet@1.914.118.2, 2003-02-19 09:55:14-05:00,
Fixed signal blocking and cleaned up the code a bit.

ChangeSet@1.914.93.32, 2003-02-07 13:48:13-05:00,
Fixed a few compilation bugs in the ubd changes.

ChangeSet@1.914.93.31, 2003-02-07 12:52:23-05:00,
Merged in changes from 2.4 up to 2.4.19-50.
The ubd driver locks its files.
Merged a bunch of ubd fixes from James McMechan.
stdout is now flushed before entering the kernel.
Fixed a uaccess fencepost bug.
Fixed a 'tracing myself' bug.
Various other cleanups and error message fixes.

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